2003 ford focus

Water leak, had to add coolant and water every few days to resevior otherwise it was empty and car would overheat. There is a small “hole” in the top of the resevior, looks like it was melted or something. There was boiling or bubbly water in the bottom of this if the vehicle was driven short and long distances.

Flash forward to now, you can’t even put water into the resevior as it ALL spills out somewhere near the water pump instantly. To be honest, I don’t know if there is anything in the radiator.

i am having the car towed to a mechanic as the battery is dead now but I just want to know what to expect… Please help.